Replacement for FET-40G: Drop-In Alternatives We Stock
Looking for a replacement for the FET-40G (Cisco FET-40G 40Gb/s 40GBase-SR4 Multi-Mode 150m 850nm MPO QSFP+ Transceiver Module Spare)? Pro Disk Network ships Cisco drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the FET-40G
| SKU | FET-40G |
|---|---|
| Product | Cisco FET-40G 40Gb/s 40GBase-SR4 Multi-Mode 150m 850nm MPO QSFP+ Transceiver Module Spare |
| Current price | $140.36 |
| Stock status | In Stock |
| Detail page | View FET-40G › |
Drop-in replacements for FET-40G
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
FET-10G-RF - Cisco FET-10G 10Gb/s 10GBase-SR Multi-Mode Fibre 300m 850nm SFP+ Transceiver Module
SKU: FET-10G-RF
Price: $111.87
Cisco QSFP-40G-SR4 40Gb/s 40GBase-SR4 Multi-Mode Fiber 150m 850nm MPO Connector QSFP+ Transceiver Module Spare
SKU: QSFP-40G-SR4
Price: $63.14
10-2672-01 - Cisco Multi-mode QSFP-40G-SR4 850nm 150m 40Gb/s Fiber MTP/MPO QSFP+ Transceiver Module
SKU: 10-2672-01
Price: $79.66
QSFP-40G-SR - Cisco 40Gb/s 40GBase-SR4 Multi-Mode Fiber 150m 850nm MPO Connector QSFP+ Transceiver Module
SKU: QSFP-40G-SR
Price: $172.16
QSFP-40G-SR4-RF - Cisco 40Gb/s 40GBase-SR4 Multi-Mode Fiber 150m 850nm MPO Connector QSFP+ Transceiver Module
SKU: QSFP-40G-SR4-RF
Price: $188.30
Cisco CFP-40G-SR4 40Gb/s 40GBase-SR4 Multi-Mode Fiber 150m 850nm MPO Connector CFP Transceiver Module Spare
SKU: CFP-40G-SR4
Price: $299.00
Cisco QSFP-40G-SR4-S Multi-Mode 40Gbps 40GBase-SR4 Fiber 150m 850nm MTP/MPO Connector QSFP+ Transceiver Module
SKU: QSFP-40G-SR4-S
Price: $164.11
QSFP-40G-SR4-S-RF - Cisco Multi-Mode 40Gbps 40GBase-SR4 Fiber 150m 850nm MTP/MPO Connector QSFP+ Transceiver Module
SKU: QSFP-40G-SR4-S-RF
Price: $232.84
FET-10G - Cisco Multi-mode 10Gb/s Fiber 100m 850nm Duplex LC Connector SFP+ Transceiver Module
SKU: FET-10G
Price: $79.66
Cisco QSFP-40G-BD-RX Multi-mode 40Gbps 40GBase-SR-BiDi Fiber 150m LC Connector QSFP+ Transceiver Module
SKU: QSFP-40G-BD-RX
Price: $1,617.22
QSFP-40G-CSR4 - Cisco 40Gb/s 40GBase-CSR4 Multi-Mode Fiber 400m 850nm MTP/MPO Connector QSFP+ Transceiver Module
SKU: QSFP-40G-CSR4
Price: $140.36
QSFP-40G-CSR4-RF - Cisco 40Gb/s 40GBase-CSR4 Multi-Mode Fiber 400m 850nm MTP/MPO Connector QSFP+ Transceiver Module
SKU: QSFP-40G-CSR4-RF
Price: $2,377.04
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.